UCM6208 Waiting Ringtone Modification

suggestion
ip-communications
ringtones
#1

Dear All,

I have a UCM6208 Grandstream IP PBX. Where can I change the waiting ringtone on such?

Thanks in advance!

#2

How is the waiting ringtone triggered ?

#3

are you referring to call waiting tone or the ringtone?
call waiting tone played for callee or caller?